US to offer pre-paid service for iPhone 4 and 4S. Check out excerpt from VentureBeat:

“Starting on June 22, Cricket’s service will run $55 a month and that gets you unlimited data, texting and calling. Data isn’t truly unlimited however and after you use 2.3GB of data, your speeds will be throttled.

want the best products available and we are excited to bring iPhone to our pre-paid consumers with an industry leading $55 per-month service plan,” said Doug Hutcheson, CEO of Cricket-parent Leap Wireless, in a statement. “Launching iPhone is a major milestone for us and we are proud to offer iPhone customers attractive nationwide coverage, a robust 3G data network and a value-packed, no-contract plan.”